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SubjectRe: Direct access to hardware
On Tue, 25 Jul 2000, Horst von Brand wrote:

> James Sutherland <> said:
> > On Sun, 23 Jul 2000, Horst von Brand wrote:
> [...]
> > > Yep. It should also carefully check that those damn ELF thingies being
> > > thrown at the CPU better contain valid code!
> > It does. How do you think the kernel works around CPU bugs - replicate
> > nanites to rewire the CPU?
> Please show me where Linux checks every byte of an executable before
> running it to make sure it doesn't f00f or coma your CPU.

Inside the CPU, in hardware. If you attempt to execute invalid code, Linux
knows about it straight away.


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